Benchmark: Interpolation vs join

Script Preparation code:

var prefix = '123454'
var echelon = '123454'
var classifier = '123454'
var id = '123454'

Tests:

Interpolation
const results = `${prefix}:${echelon}:${classifier}:${id}`
Join
const results = [prefix, echelon, classifier, id].join(':')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Interpolation
Join

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's break down the provided JSON benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition:**
The benchmark measures the performance difference between two approaches to concatenate strings in JavaScript:

1. **Interpolation**: Using template literals (the `const results = `${prefix}:${echelon}:${classifier}:${id}`` syntax) to concatenate the four strings.
2. **Join**: Using the `join()` method (the `const results = [prefix, echelon, classifier, id].join(':')` syntax) to concatenate the four strings.

**Library and Purpose:**
None are explicitly mentioned in this benchmark definition, but we can infer that template literals are being used, which is a built-in JavaScript feature since ECMAScript 2015 (ES6).

**Special JS Feature or Syntax:**
The use of template literals (`${}`) is the special syntax being tested. Template literals allow you to embed expressions inside string literals, making it easier to create dynamic strings.

**Options Compared:**

* **Interpolation (Template Literals)**:
	+ Pros:
		- Easier to read and write, especially for more complex string concatenations.
		- Can be used with arrow functions, methods like `push()` or `splice()`, and even as a function call.
	+ Cons:
		- May incur a performance penalty due to the creation of a new string object.
* **Join (Method)**:
	+ Pros:
		- More efficient than template literals for concatenating many strings, as it avoids creating intermediate string objects.
	+ Cons:
		- Can be less readable and error-prone, especially when dealing with large numbers of strings or complex concatenations.

**Other Considerations:**

* The benchmark uses Chrome 99 on a Windows Desktop platform, which may not be representative of other browsers or platforms.
* There are two test cases, each testing one approach. This is sufficient for comparing the performance difference between interpolation and join.
* No other JavaScript features or libraries are being tested.

**Alternatives:**
Other approaches to concatenate strings in JavaScript include:

1. **String concatenation using `+`**: e.g., `prefix + echelon + classifier + id`
2. **Array methods**: e.g., `['prefix', 'echelon', 'classifier', 'id'].join(':')` (similar to the Join approach)
3. **Regular expressions**: e.g., `new RegExp(`^${prefix}:${echelon}:${classifier}:${id}$`).exec()`

These alternatives may have different performance characteristics and use cases compared to interpolation and join.

Related benchmarks:

Interpolation vs join (version: 0)

Comparing performance of: Interpolation vs Join

Created: 4 years ago by: Guest

Jump to the latest result

Interpolation

Join

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):